CN210346757U - Power battery cell and module expansion testing device - Google Patents
Power battery cell and module expansion testing device Download PDFInfo
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- CN210346757U CN210346757U CN201921253466.7U CN201921253466U CN210346757U CN 210346757 U CN210346757 U CN 210346757U CN 201921253466 U CN201921253466 U CN 201921253466U CN 210346757 U CN210346757 U CN 210346757U
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Abstract
The utility model provides a power battery cell and module inflation test device, including test bench, fixed atress end part and removal application of force end part, fixed atress end part is including fixed atress board and the connection structure who realizes bulging force, inflation thickness monitoring, fixed atress board bolt fastening is in the one end of test bench, power battery cell and module are tight with the removal application of force end part of opposite side through the fixed atress end part of one side, and by the connection structure who realizes bulging force, inflation thickness monitoring measures the bulging force and the inflation thickness that produce after power battery cell and module inflation; the utility model discloses a displacement sensor, pressure sensor, bubble cotton or other electric cores and the material and the light weight partition panel connection structure that excels in that the module actually can be used can realize the effective monitoring of bulging force and inflation thickness among electric core or the module inflation process, can restore the in service behavior on the power battery car behind the electric core one-tenth module more really.
Description
Technical Field
The utility model relates to a new energy automobile power battery system, in particular to inflation test of electricity core and module.
Background
The application of the new energy automobile with the power battery is increasingly wide, and the new energy automobile with the power battery is one of main routes for development of the automobile industry in future. The lithium ion battery is used as the core of a new energy automobile with a power battery, and various physical and chemical properties of the lithium ion battery are key factors influencing the quality of a product.
Soft package lithium ion battery cell can lead to electric core thickness to increase because of following two reasons at the charge-discharge cycle in-process, volume expansion: 1. bulging caused by thickness variation of the battery pole piece; 2. swelling caused by the oxidation, decomposition and gas generation of the electrolyte. And the battery core expansion has extremely important influence on the cycle life of the battery core and the structural reliability of the battery module. Therefore, the study is clear that the thickness expansion rate and the expansion force curve of electric core and module charge-discharge process are crucial, and we can make reasonable electric core group structure in view of the above so as to guarantee the service life and the structural reliability of the electric core group structure.
Comparison document 1: CN208998694U discloses a lithium ion battery expansion displacement testing device, in an initial state, a spring with a certain spring constant pushes a movable plate to contact a battery cell, after the battery cell testing process expands, the movable plate is pushed, the cooperation of multiple guide posts and guide sleeves ensures that the movable plate slides in parallel, the scale on the guide posts is set to directly read the expansion thickness of the battery cell at different times, and the average value can be obtained through the reading values on the multiple guide posts.
In the existing battery cell and module expansion testing technology, a spring structure is generally adopted to give an expansion space to a battery cell, so that the expansion rate and the expansion force of the battery cell under the spring structure can be measured; or a fixed space structure is adopted, the expansion space of the battery cell is not provided, and only the change condition of the expansion force along with charging and discharging is measured; or a strain gauge is used to measure the strain of the fixed plate. Above these have a key defect, can not really reflect the battery core and make the module after, the charge-discharge expansion situation under this structural style. The existing module gives a certain expansion compression space to the battery cell through other elastomers such as foam or compressible rubber, and the elastic stiffness of the spring determines that the elastic compression of the spring is different from that of the foam or other elastomers, so that the actual condition of the elastomer used in the battery cell module cannot be accurately simulated by the elastic compression of the spring; in addition, the testing device in the fixed space can only test the force of the battery cell under the condition of no thickness expansion, and the real effectiveness is further lacked.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the problem lies in, problem to prior art exists, a power battery electricity core and module inflation test are with device is provided, the device becomes pre-compaction and the expandable space of module through true effective simulation electricity core, and cut off electricity core and bubble cotton or other module structures with light high-strength sheet metal and use the elastomer, thereby electricity core inflation power is used in the light sheet metal on recompression bubble cotton, guarantee effectively to record the inflation force and the inflation thickness change of charge-discharge process under the cotton undistorted condition of electricity core inflation compression bubble, and compress tightly fixing device through one set of rocker slide rail, can realize single electricity core, the inflation test of whole module.
For solving the technical problem, the utility model provides a power battery electricity core and module inflation test are with device, including test bench, fixed atress end part and removal application of force end part, fixed atress end part reaches remove the equal fixed mounting of application of force end part in test bench upper portion to distance between the two is adjustable, fixed atress end part is including fixed atress board and realize the connection structure of expansibility, inflation thickness monitoring, fixed atress board bolted fixation is in the one end of test bench, power battery electricity core and module are tight with the removal application of force end part of opposite side through the fixed atress end part of one side, and by realize that the connection structure of expansibility, inflation thickness monitoring measures pressure and displacement volume that produce after power battery electricity core and the module inflation.
Furthermore, the test bed is a base and a foundation of the whole device, other parts are directly or indirectly arranged on the test bed, and a plurality of installation positions which are far away from the fixed stressed end part are arranged on the test bed.
Furthermore, the connecting structure for monitoring the expansion force and the expansion thickness in the fixed stress end part comprises a pressure sensor, a displacement sensor, a first stress plate, foam cotton and a bakelite thin plate; the pressure sensor is fixed between the fixed stress plate and the first stress plate and used for monitoring feedback expansion force; the displacement sensor is fixed on the first stress plate, and the sensing part at the tip end of the displacement sensor passes through the first stress plate and the small hole of the foam to be in contact with the bakelite thin plate; the first stress plate is connected with the fixed stress plate into a whole through the pressure sensor, and the other side of the first stress plate is bonded with the foam; the bakelite thin plate is bonded with the foam.
Furthermore, the movable force application end part comprises a force transmission support structure, a sliding rail structure and a rocker force transmission structure.
Furthermore, the force transmission support structure comprises an insulating bakelite, a second stress plate and a force transmission support, wherein the insulating bakelite is fixedly connected with the second stress plate through a bolt; the second stress plate is fixedly connected with the force transmission bracket through a bolt.
Furthermore, the sliding rail structure comprises a movable bottom plate, a sliding block, a sliding rail and a rubber baffle, wherein the sliding block is connected with the force transmission bracket through a bolt; the sliding block is matched with the pair of sliding rails to realize relative sliding; a rubber baffle is fixed at one end of the sliding rail to prevent the sliding block and the force transmission bracket from sliding out; the slide rails are a pair and are respectively fixed on the movable bottom plate.
Furthermore, the rocker force transmission structure comprises a screw fixing seat, a screw and a hand-operated wheel disc; the screw fixing seat is fixedly connected to the movable bottom plate through a bolt, and a threaded hole is formed in the middle of the screw fixing seat; one end of the screw is fixedly connected with the hand-operated wheel disc, the middle of the screw penetrates through a threaded hole of the screw fixing seat, a threaded hole is formed in the position, corresponding to the screw, of the force transmission support, and the other end of the screw penetrates through the threaded hole and then is fixed on the force transmission support through the end cover in a buckled mode.
Further, the movable force application end part also comprises a movable base; the movable base is fixed on the test bed through bolt connection; the movable bottom plate is fixedly connected to the movable base through bolts.
Further, if the module needs to be tested, only the position of the force application component needs to be adjusted, a proper distance is selected, and the first stress plate and the second stress plate are replaced by the module end plate.
The beneficial effects of the utility model reside in that:
1. through displacement sensor, pressure sensor, foam or other electric cores and the material and the light weight high strength partition panel connection structure that the module actually can be used, can realize effective monitoring of bulging force and inflation thickness among electric core or the module inflation process, can restore the in service behavior on the power battery car behind the electric core becomes the module more really.
2. But the application of mobile base, slide rail and rocker biography force structure can realize the expansion test of single electric core to different thickness modules.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a device for testing expansion of a battery cell and a module of a power battery.
Fig. 2 is the structure diagram of the middle test bed and the fixed stressed plate of the utility model.
Fig. 3 is the connection schematic diagram of the middle pressure sensor and the displacement sensor of the present invention.
Fig. 4 is a schematic diagram of the cell and module clamping portion of the new embodiment.
Figure 5 is a schematic view of the connection of the force transfer bracket in the new embodiment.
Fig. 6 is a schematic view of the fixing and force-transferring structure of the middle rocker of the present invention.
Fig. 7 is a schematic view of the middle mobile plate and the base of the present invention.
Fig. 8 is the utility model discloses pass power support and hand rim plate and connect the schematic diagram.
Description of the drawings:
1-fixed atress board, 2-test bench, 3-pressure sensor, 4-displacement sensor, 5-first atress board, 6-bubble cotton, 7-bakelite sheet metal, 8-electricity core, 9-insulating bakelite, 10-second atress board, 11-pass power support, 12-remove bottom plate, 13-slider, 14-slide rail, 15-rubber baffle, 16-screw rod fixing base, 17-screw rod, 18-hand rim plate, 19-remove base, 20-end cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
The invention is further described below with reference to the accompanying drawings and specific embodiments:
The preferred scheme as the embodiment of the utility model is as follows:
as shown in fig. 2, the test bed 2 is a base and a foundation of the whole device, other components are directly or indirectly mounted on the test bed, and a plurality of mounting positions which are far away from the fixed stressed end component are arranged on the test bed 2.
As shown in fig. 3, the connection structure for monitoring the expansion force and the expansion thickness in the fixed stressed end part comprises a pressure sensor 3, a displacement sensor 4, a first stressed plate 5, foam 6 and a bakelite thin plate 7; the pressure sensor 3 is fixed between the fixed stress plate 1 and the first stress plate 5 and used for monitoring feedback expansion force; the displacement sensor 4 is fixed on the first stress plate 5, and the tip sensing part of the displacement sensor passes through the first stress plate 5 and the small hole of the foam 6 to be in contact with the bakelite thin plate; the first stress plate 5 is connected with the fixed stress plate 1 into a whole through the pressure sensor 3, and the other side of the first stress plate is bonded with the foam 6; the bakelite thin plate 7 is bonded with the foam 6.
The movable force application end component comprises a force transmission support structure, a sliding rail structure and a rocker force transmission structure.
As shown in fig. 4, the force transmission bracket structure comprises an insulated bakelite 9, a second stress plate 10 and a force transmission bracket 11, wherein the insulated bakelite 9 is fixedly connected with the second stress plate 10 through bolts; the second stress plate 10 is fixedly connected with the force transmission bracket 11 through bolts.
As shown in fig. 5, the sliding rail structure comprises a movable bottom plate 12, a sliding block 13, a sliding rail 14 and a rubber baffle 15, wherein the sliding block 13 is connected with a force transmission bracket 11 through a bolt; the sliding block 13 is matched with a pair of sliding rails 14 to realize relative sliding; a rubber baffle 15 is fixed at one end of the slide rail 14 to prevent the slide block 13 and the force transmission bracket 11 from sliding out; the slide rails 14 are a pair and are respectively fixed on the movable bottom plate 12.
As shown in fig. 6, the rocker force transmission structure comprises a screw fixing seat 16, a screw 17 and a hand cranking wheel disc 18; the screw fixing seat 16 is fixedly connected to the movable bottom plate 12 through a bolt, and a threaded hole is formed in the middle of the screw fixing seat 16; one end of the screw rod 17 is fixedly connected with the hand-operated wheel disc 18, the middle of the screw rod 17 penetrates through a threaded hole of the screw rod fixing seat 16, a threaded hole is formed in the position, corresponding to the screw rod, of the force transmission support 11, and the other end of the screw rod 17 penetrates through the threaded hole and then is fastened and fixed on the force transmission support 11 through the end cover 20.
As shown in fig. 7, the moving force application end part further includes a moving base 19; the movable base 19 is fixed on the test bed 2 through bolt connection; the movable base plate 12 is fixedly connected to the movable base 19 through bolts.
If the module needs to be tested, the position of the movable force application part is adjusted, a proper distance is selected, and the first stress plate 5 and the second stress plate 10 are replaced by the module end plates.
As the utility model discloses implementation process as follows:
after the electric core 8 is pre-compressed by the fixed stress end part and the movable force application part, a charge-discharge cycle test is carried out, the electric core 8 expands in the process, an expansion force is applied to the insulating bakelite 9 at the movable end and the bakelite thin plate 7 at the fixed end, at the moment, the movable end is locked by the screw thread and is fixed, the bakelite thin plate 7 at the fixed end further and completely transmits the force to the foam 6 and compresses the foam 6, the foam 6 further transmits the force to the first stress plate 5, and the pressure sensor 3 measures data; the thickness change of the expansion of the battery core 8 is obtained by the thickness change of the compressed foam 6 of the bakelite thin plate 7 and is measured by a sensing end of the displacement sensor 4 which is in close contact with the bakelite thin plate 7. Therefore, the expansion force and the thickness change under the real condition can be effectively measured in the whole expansion process of the battery cell 8. The test data can effectively guide the design and production of the battery core and the module.
The above is a detailed introduction of the present invention, and the principles and embodiments of the present invention have been explained herein using specific embodiments, and the explanations of the above embodiments are only used to help understand the methods and core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (9)
1. A device for testing expansion of a power battery cell and a module comprises a test bed, a fixed force-applying end part and a movable force-applying end part; the fixed stress end part comprises a fixed stress plate and a connecting structure for realizing monitoring of expansion force and expansion thickness; the fixed stress plate is fixed at one end of the test bed through a bolt, the power battery cell and the module are clamped with the movable force application end at the other side through the fixed stress end part at one side, and the expansion force and the expansion thickness generated in the expansion process of the power battery cell and the module are measured through the connecting structure for monitoring the expansion force and the expansion thickness.
2. The device of claim 1, wherein the fixed force-receiving end member and the movable force-applying end member are both fixedly mounted on an upper portion of the test bed, and a distance between the fixed force-receiving end member and the movable force-applying end member is adjustable.
3. The device for testing expansion of a battery cell and a module of a power battery of claim 1, wherein the test bed is a base and a foundation of the whole device, and the test bed is provided with a plurality of mounting positions which are distant from the fixed stressed end part from each other.
4. The device for testing expansion of battery cells and modules of power batteries according to any of claims 1-3, wherein the connection structure for monitoring the expansion force and the expansion thickness in the fixed stressed end member comprises a pressure sensor, a displacement sensor, a first stressed plate, foam and a bakelite sheet; the pressure sensor is fixed between the fixed stress plate and the first stress plate and used for monitoring feedback expansion force; the displacement sensor is fixed on the first stress plate, and the sensing part at the tip end of the displacement sensor passes through the first stress plate and the small hole of the foam to be in contact with the bakelite thin plate; the first stress plate is connected with the fixed stress plate into a whole through the pressure sensor, and the other side of the first stress plate is bonded with the foam; the bakelite thin plate is bonded with the foam.
5. The device for testing expansion of battery cells and modules of power batteries according to any of claims 1-3, wherein the movable force application end member comprises a force transmission support structure, a sliding rail structure and a rocker force transmission structure.
6. The device for testing expansion of a power battery cell and a module according to claim 5, wherein the force transmission support structure comprises an insulating bakelite, a second stress plate and a force transmission support; the insulating bakelite is fixedly connected with the second stress plate through bolts; the second stress plate is fixedly connected with the force transmission bracket through a bolt.
7. The device for testing expansion of the battery core and the module of the power battery according to claim 6, wherein the slide rail structure comprises a movable bottom plate, a slide block, a slide rail and a rubber baffle plate, and the slide block is connected with the force transmission bracket through a bolt; the sliding block is matched with the pair of sliding rails to realize relative sliding; a rubber baffle is fixed at one end of the sliding rail to prevent the sliding block and the force transmission bracket from sliding out; the slide rails are a pair and are respectively fixed on the movable bottom plate.
8. The device for testing expansion of the battery core and the module of the power battery according to claim 7, wherein the rocker force transmission structure comprises a screw fixing seat, a screw and a hand-operated wheel disc; the screw fixing seat is fixedly connected to the movable bottom plate through a bolt, and a threaded hole is formed in the middle of the screw fixing seat; one end of the screw is fixedly connected with the hand-operated wheel disc, the middle of the screw penetrates through a threaded hole of the screw fixing seat, a threaded hole is formed in the position, corresponding to the screw, of the force transmission support, and the other end of the screw penetrates through the threaded hole and then is fixed on the force transmission support through the end cover in a buckled mode.
9. The device for testing expansion of battery cells and modules of power batteries according to claim 7 or 8, wherein the movable force application end part further comprises a movable base; the movable base is fixedly connected to the test bed through bolts; the movable bottom plate is fixedly connected to the movable base through bolts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921253466.7U CN210346757U (en) | 2019-08-05 | 2019-08-05 | Power battery cell and module expansion testing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921253466.7U CN210346757U (en) | 2019-08-05 | 2019-08-05 | Power battery cell and module expansion testing device |
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| CN210346757U true CN210346757U (en) | 2020-04-17 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112379287A (en) * | 2020-09-15 | 2021-02-19 | 万向一二三股份公司 | Test fixture for lithium ion power battery with large length-width ratio |
| CN113358253A (en) * | 2021-04-30 | 2021-09-07 | 上海工程技术大学 | Columnar battery expansion force and displacement measuring device |
| CN113937375A (en) * | 2021-10-12 | 2022-01-14 | 傲普(上海)新能源有限公司 | Energy storage battery safety monitoring method |
| CN114019263A (en) * | 2020-07-16 | 2022-02-08 | 哲弗智能系统（上海）有限公司 | Battery thermal runaway experimental device |
| CN114440974A (en) * | 2022-01-18 | 2022-05-06 | 上海工程技术大学 | Battery expansion displacement and temperature in-situ measuring device |
| CN117140029A (en) * | 2023-10-30 | 2023-12-01 | 广东东博智能装备股份有限公司 | Automatic battery assembly device for battery production |
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2019
- 2019-08-05 CN CN201921253466.7U patent/CN210346757U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019263A (en) * | 2020-07-16 | 2022-02-08 | 哲弗智能系统（上海）有限公司 | Battery thermal runaway experimental device |
| CN114019263B (en) * | 2020-07-16 | 2023-05-12 | 哲弗智能系统（上海）有限公司 | Battery thermal runaway experimental device |
| CN112379287A (en) * | 2020-09-15 | 2021-02-19 | 万向一二三股份公司 | Test fixture for lithium ion power battery with large length-width ratio |
| CN113358253A (en) * | 2021-04-30 | 2021-09-07 | 上海工程技术大学 | Columnar battery expansion force and displacement measuring device |
| CN113937375A (en) * | 2021-10-12 | 2022-01-14 | 傲普(上海)新能源有限公司 | Energy storage battery safety monitoring method |
| CN114440974A (en) * | 2022-01-18 | 2022-05-06 | 上海工程技术大学 | Battery expansion displacement and temperature in-situ measuring device |
| CN114440974B (en) * | 2022-01-18 | 2024-01-19 | 上海工程技术大学 | Battery expansion displacement and temperature in-situ measurement device |
| CN117140029A (en) * | 2023-10-30 | 2023-12-01 | 广东东博智能装备股份有限公司 | Automatic battery assembly device for battery production |
| CN117140029B (en) * | 2023-10-30 | 2024-01-09 | 广东东博智能装备股份有限公司 | Automatic battery assembly device for battery production |
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Effective date of registration: 20230912 Address after: No. 46, Qingfu Anshijia, Guoxiangqiao Village, Lanjiang Street, Yuyao City, Ningbo City, Zhejiang Province, 315402 Patentee after: Yuyao Haitai Trading Co.,Ltd. Address before: Room g0232, headquarters building, Changsha Zhongdian Software Park, No. 39, Jianshan Road, high tech Development Zone, Changsha City, Hunan Province, 410013 Patentee before: Thornton New Energy Technology (Changsha) Co.,Ltd. |